feat(ui): hide paid features from community-tier dashboard (#891)

* feat(ui): hide paid features from community-tier dashboard

Community installs render only the features they can use. Tier-locked
sections, lock badges, upsell cards, and "Upgrade" buttons no longer
appear anywhere except the License page in Settings, which is the
single discoverable upgrade path.

Concretely:

- PaidGate and AdmiralGate now render null for non-qualifying tiers
  instead of upsell cards.
- SectionGate (settings) hides tier-locked sections entirely.
- Settings sidebar and command palette filter out items the operator
  cannot reach.
- Configuration Status widget on the dashboard drops the Automation
  section for community and hides any locked rows in remaining
  sections.
- Fleet > Status node cards drop locked summary rows.
- Stack action menu, sidebar bulk bar, file upload / download, scan
  comparison, network topology toggle, node label picker all hide
  for community instead of showing disabled affordances or "Upgrade"
  literal text.
- Removes tierUpsell, TierLockChip, and useDismissalState (no longer
  referenced).

Backend tier guards remain authoritative; this changes UI discovery
only.

* test(e2e): assert upload control is absent in community tier

The community-clean-ui change removes the "Upgrade to unlock upload"
pill from the file explorer. Update the matching e2e assertion to
verify the upload control is not rendered, instead of waiting for a
pill that no longer exists.

frontend/src/components/settings/WebhooksSection.tsx

@@ -7,8 +7,6 @@ import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from '@
 import { toast } from '@/components/ui/toast-store';
 import { apiFetch } from '@/lib/api';
 import { copyToClipboard } from '@/lib/clipboard';
-import { PaidGate } from '@/components/PaidGate';
-import { CapabilityGate } from '@/components/CapabilityGate';
 import {
     RefreshCw, CheckCircle, XCircle, Webhook, Copy, Trash2,
     Plus, ChevronDown, ChevronRight, History,
@@ -154,20 +152,7 @@ export function WebhooksSection({ isPaid }: { isPaid: boolean }) {
         }
     };
 
-    if (!isPaid) {
-        return (
-            <div className="space-y-6">
-                <PaidGate featureName="Webhooks">
-                  <CapabilityGate capability="webhooks" featureName="Webhooks">
-                    <div className="space-y-3">
-                        <div className="h-16 rounded-lg border bg-card" />
-                        <div className="h-16 rounded-lg border bg-card" />
-                    </div>
-                  </CapabilityGate>
-                </PaidGate>
-            </div>
-        );
-    }
+    if (!isPaid) return null;
 
     return (
         <div className="flex flex-col gap-10">